Weird news - Finding vomit on your airline seat
Well, this gentlemen got to see the case when the seat was not cleaned and got a seat with vomit on it, and with not much of sympathies or action from the cabin crew (link to article):
A British Airways passenger was horrified to find his seat covered in what appeared to be vomit. Passenger Dave Gildea was travelling from London Heathrow airport to Seattle when he was assigned seat 64K. "I had upgraded to business class at the airport in London Heathrow and was assigned seats 64K," the 38-year-old told The Sun. "I didn't notice anything until about two hours into the British Airways flight when I popped down the foot stool so I could get some sleep and saw the vomit on the seat. "It was also splashed on the wall behind and the floor below, which I then noticed." However, Mr Gildea says that he when he told the cabin crew about it, they asked if he had been sick on the seat himself. "I went to the cabin crew and the attendants first response was 'was this here when you boarded?' but it was clear it was dried in," he says.